You will be given a definition of a task first, then some input of the task.
In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

The world's two best openside flankers, Australia's David Pocock and New Zealand's Richie McCaw, go head-to-head in a key battle for the Webb Ellis Cup at Twickenham on Saturday. Sportsmail's Nik Simon compares their strengths ahead of the World Cup final to see which players gives their side the biggest edge. No one has come close to David Pocock as the turnover king at this World Cup. The Wallaby has made 14 steals, eclipsing Richie McCaw’s six. His tree-trunk thighs and huge upper body make him difficult to shift when he jackals over the ball - usually resulting in a penalty or a textbook turnover. McCaw is an expert at protecting his own team’s ball, so the contest is likely to boil down to who reaches the collision area first unless the All Blacks can find a way to smash Pocock off the ball.Sportsmail compares Australia and New Zealand's superstar flankersDavid Pocock has been the World Cup's master at the breakdownBut Richie McCaw has the edge on link play and leadership impactWallabies and All Blacks clash for the Webb Ellis Cup on SaturdayRugby World Cup 2015: Latest RWC news, results and fixtures 
 Questions:The 34-year-old - who is seven years senior to _ - has developed an aura throughout his career. (A) Australia (B) David Pocock (C) New Zealand (D) Richie McCaw (E) Webb Ellis Cup (F) Twickenham (G) Sportsmail (H) Nik Simon (I) World Cup (J) Wallaby (K) McCaw (L) All Blacks (M) Wallabies (N) Rugby World Cup (O) RWC
Output:
(B)